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Finding the Fourth Proportional to 158,561.50, 218,794.81 and 86,922.67

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Solution

The fourth proportional to 158,561.50, 218,794.81 and 86,922.67 is: 119,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,561.50 : 218,794.81 = 86,922.67 : x
  2. Step 2: Convert to fraction form
    158,561.50/218,794.81 = 86,922.67/x
  3. Step 3: Cross multiply
    158,561.50x = 218,794.81 × 86,922.67
  4. Step 4: Simplify right side
    158,561.50x = 19,018,229,067.34
  5. Step 5: Solve for x
    x = 19,018,229,067.34/158,561.50
  6. Step 6: Final answer
    x = 119,942.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.